In the northwest, esp Liverpool, they were always called "scallies". Don't know about today though.

First came across the term "chav" in the midlands.

In London "roadman" doesn't seem to be exactly the same thing. Seems to be more of an act by kids trying to fit in or look hard. "Scallies" were less about their front and more about the skinheads and tracksuits which was as much an income thing as anything else.

"Chavs" just seems to imply tastlessness. The fake tan orange girls w attitude problems, belligerent guys in a labelled shirt getting into boozy fights etc. There's a lot of cross over, but I don't think they're identical.